BIODANCE Bio-Collagen Real Deep Mask Sheet 34g is a Korean hydrogel mask packed with 50,000 ppm of ultra-low molecular collagen extract (243 daltons) and 50,000 ppm of hydrolysed hyaluronic acid — both small enough to actually absorb into the skin. The mask turns fully transparent as it works, which means all the active ingredients have moved into your skin. It delivers a clinically proven 166% hydration boost that lasts 150+ hours. Buy online from koreanshopbd.com, COD available!